作者:Tomio Shimizu、Yoshiyuki Hayashi、Kazuhiro Teramura
DOI:10.1246/bcsj.58.2519
日期:1985.9
A thermal decomposition of dimethyl nitromalonate to bis(carbomethoxy)furoxan was observed at about 170 °C. In the presence of dipolarophiles, an intermediate, methyl carbonocyanidate N-oxide MeOCOC≡N→O, could be trapped as cycloadducts in good yields by the 1,3-dipolar cycloaddition. Treatment of dimethyl nitromalonate in mesitylene at the refluxing temperature resulted in a formation of methyl 2-(hydroxyimino)-2-(2,4,6-trimethylphenyl)acetate.
在约170°C下,观察到了二甲基硝基丙二酸酯的热分解反应,生成了双(羧甲酯)呋喃唑烷。在存在偶极亲电试剂的情况下,可以通过1,3-偶极环加成反应以良好产率捕获作为环加合物的中间体,即甲基碳二腈N-氧化物MeOCOC≡N→O。将二甲基硝基丙二酸酯在均三甲苯中回流处理,导致了甲基2-(羟基亚氨基)-2-(2,4,6-三甲基苯基)乙酸酯的形成。